Modern Fs BufferedReader Peek

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BufferedReader.Peek

Copies up to n upcoming bytes into an Array without consuming them.

Syntax

BufferedReader.Peek( n, buf )

Notes

• Up to n bytes ahead -- at most the buffer's capacity -- WITHOUT consuming them. buf's contents are replaced; returns the count, which is less than n only at the end of the data.

Examples

#import "std/fs"
#import "std/containers"
using fs

dim as MemoryStream m = MemoryStream( "PK..." )
dim as BufferedReader br = BufferedReader( m )
dim as containers.Array( of ubyte ) b
br.Peek( 2, b )
print chr( b[0], b[1] )    '' PK
dim as ubyte c
br.ReadByte( c )
print chr( c )             '' P -- still there

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Library: Filesystem Library Category: File Streams Documented under: Streams